Without further ado, just look at the following
The above are two unique codes of STM8S103. As can be seen from the figure, the key point is that the first 4 bytes are different. If the batch number behind is the same batch of goods, it is consistent.
//The following reading is suitable for STM8S103
unsigned char Read_UniqueID_Byte(unsigned char offset)
{
unsigned char id_byte;
id_byte = *(unsigned char*)(0x4865+offset); //ID base address is 0x4865
return id_byte;
}
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